<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%  
String path = request.getContextPath();  
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  
%>  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script language="javascript"> 
function loadimage(){ 
document.getElementById("randImage").src = "image.jsp?"+Math.random(); 
} 
</script> 
</head>
<body>
<%  
    String incode = (String)request.getParameter("code");   
    String rightcode = (String)session.getAttribute("rCode");   
      
    if(incode != null && rightcode != null){  
        if(incode.equals(rightcode)){  
            out.println("验证码输入正确！");  
        }else{  
            out.println("验证码输入不正确，请重新输入！");  
        }  
    }  
  %>  

<form action="login.jsp" method="post">  
    用户名：  
    <input type="text" name="username"/><br/>  
    密码：  
    <input type="password" name="password"/><br/>  
    验证码：  
    <img src="number.jsp"/>  
    <input type="text" name="code"/>  
    <input type="submit" value="登录"/>  
    </form>  
</body>
</html>